On Oct 18, 2007, at 11:41 AM, Paul Mele wrote:
>
> Then a geo-thermal is most efficient energy user, but most hassle
> and cost
> to install; however, if you really only want to keep it at 50
> inside, and
> your building is already very tight and insulated, a ground loop
> about 5 ft
> deep with water thru and air handler will keep it 45 or above in
> winter and
> 85 or below in summer here in NC (I've had this in my shop).
How does the ground temperature not eventually reach equilibrium with
the shop? I can't see the transfer of heat in dirt being fast enough
to absorb a summer's worth of 85+ temps.
jim
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